Tuning the polarity and surface activity of hydroxythiazoles – extending the applicability of highly fluorescent self-assembling chromophores to supra-molecular photonic structures

2016 ◽  
Vol 4 (5) ◽  
pp. 958-971 ◽  
Author(s):  
S. H. Habenicht ◽  
S. Schramm ◽  
S. Fischer ◽  
T. Sachse ◽  
F. Herrmann-Westendorf ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Surface Activity ◽  
Langmuir Blodgett ◽  
Photonic Structures ◽  
Self Assembling ◽  
Insight Into

Processing of 4-alkoxythiazole sulfonamidesviathe Langmuir–Blodgett technique gave an insight into the influence of aggregation on the electro-optical properties of thin films.

Langmuir-Blodgett Assembly of Soft Carbon Sheets

2011 ◽  
Vol 1344 ◽  
Author(s):  
Laura J. Cote ◽  
Jaemyung Kim ◽  
Jiaxing Huang
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Building Block ◽  
Critical Role ◽  
Electrical And Optical Properties ◽  
Langmuir Blodgett ◽  
Soft Carbon ◽  
Ph Dependent ◽  
Graphene Oxide Sheets ◽  
Made In

AbstractGraphene oxide sheets have recently gained immense interest as a building block for graphene based materials and devices. Rapid developments have been made in the chemistry and applications of GO. However, assembly, too, plays a critical role in the final properties of bulk graphene based materials as it determines the microstructures of the 2D sheets. There is thus a pressing need for controllable assembly strategies. Based on the recent identification of the pH dependent surfactant-like behavior of GO sheets, we are now able to control the tiling morphologies of such sheets to produce thin films with either wrinkled or overlapped types of microstructures. This allows for the deconvolution of the effects of these two basic morphological features in the electrical and optical properties of the resulting thin films, providing a well-defined example of the processing-microstructure-properties relationship for this unique soft material building block.

Poly- and Oligoaniline Thin Films: Charge Transport, Optical Properties and Effect of Doping

1995 ◽  
Vol 413 ◽  
Author(s):  
J. Paloheimo ◽  
A. J. Pal ◽  
H. Stubb ◽  
P. Granholm ◽  
H. Isotalo
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Layer By Layer ◽  
Variable Range Hopping ◽  
Coulomb Interactions ◽  
Optical Studies ◽  
Absorption Bands ◽  
Electrical And Optical Properties ◽  
Lb Films ◽  
Langmuir Blodgett

ABSTRACTWe report a study of the electrical and optical properties of thin films of tetraanilinobenzene (TAB) and polyaniline (PANI) deposited using the Langmuir-Blodgett (LB), layer-by-layer selfassembly and vacuum-evaporation techniques. The paper will mainly concentrate on TAB LB films, but also results for other films are presented for comparison. The optical studies of undoped TAB LB films indicate H-aggregates. Upon doping new polaronic absorption bands appear and the photoluminescence of TAB becomes quenched. Doped LB and self-assembled films can reach conductivities up to about 10−4/cm for TAB and a few S/cm for PANT. The conductivity has a temperature dependence logσ α T−1/2, suggesting variable-range hopping in a quasi-gap, possibly due to the Coulomb interactions between localized carriers.

Tailoring Optical Properties of Blue-Gap Poly(p-phenylene Vinylene)s for LEDs Applications

2010 ◽  
Vol 75 ◽  
pp. 118-123
Author(s):  
Elena Dilonardo ◽  
Maria M. Giangregorio ◽  
Maria Losurdo ◽  
Pio Capezzuto ◽  
Giovanni Bruno ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Indium Tin Oxide ◽  
Substrate Surface ◽  
Polymer Chains ◽  
Semiconducting Polymers ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Self Assembling ◽  
Atomic Force

There has been growing interest in developing new semiconducting polymers for applications in optoelectronics (OLEDs) due to their exceptional processability and appealing characteristic of manipulating electronic and optical properties by tuning of molecular structure and self-assembling. This study is an investigation on the interplay among supermolecular organization and optical properties of thin films of the poly[2-(2-ethylhexyloxy)-5-methoxy]-1, 4-phenylenedifluorovinylene (MEH-PPDFV) conjugated polymer, which has fluorinated vinylene units. This interplay is elucidated exploiting atomic force microscopy, spectroscopy ellipsometry, photoluminescence and electroluminescence. Thin films of MEH-PPDFV have been deposited by drop casting on indium-tin-oxide (ITO), quartz and glass substrates. The dependence of polymer chains self-organization and morphology on substrate surface is presented. Furthermore, it is demonstrated that the presence of F-atoms in the vinylene units of the MEH-PPDFV yields a blue optical band gap with the maximum of the fundamental HOMO-LUMO transition at 331 nm and photoluminescence at 458 nm. The OLED built with the above polymer shows a very stable blue-greenish electroluminescence that is also achieved at 504 nm.

Optical properties of Langmuir-Blodgett polydiacetylene thin films

1988 ◽  
Vol 160 (1-2) ◽  
pp. 327-332 ◽  
Author(s):  
F. Kaneko ◽  
M.S. Dresselhaus ◽  
M.F. Rubner ◽  
M. Shibata ◽  
S. Kobayashi
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Langmuir Blodgett

scholarly journals Chemical Vapor Deposition Synthesis and Optical Properties of Nb2O5 Thin Films with Hybrid Functional Theoretical Insight into the Band Structure and Band Gaps

2017 ◽  
Vol 9 (21) ◽  
pp. 18031-18038 ◽  
Author(s):  
Sanjayan Sathasivam ◽  
Benjamin A. D. Williamson ◽  
Shaeel A. Althabaiti ◽  
Abdullah Y. Obaid ◽  
Sulaiman N. Basahel ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Chemical Vapor Deposition ◽  
Band Structure ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Band Gaps ◽  
Hybrid Functional ◽  
Theoretical Insight ◽  
Insight Into

OPTICAL PROPERTIES OF THIN FILMS ON ROUGH SURFACES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-363-C10-366 ◽  
Author(s):  
J. Vlieger ◽  
M. M. Wind
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Rough Surfaces
Sign in / Sign up

Export Citation Format

Share Document